package org.bouncycastle.asn1.pkcs;

import java.math.BigInteger;

import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DEREncodable;
import org.bouncycastle.asn1.DERInteger;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.x509.X509Name;

public class IssuerAndSerialNumber implements DEREncodable {
    X509Name name;
    DERInteger certSerialNumber;

    public static IssuerAndSerialNumber getInstance(Object obj) {
        if (obj instanceof IssuerAndSerialNumber) {
            return (IssuerAndSerialNumber) obj;
        } else if (obj instanceof ASN1Sequence) {
            return new IssuerAndSerialNumber((ASN1Sequence) obj);
        }

        throw new IllegalArgumentException("unknown object in factory");
    }

    public IssuerAndSerialNumber(ASN1Sequence seq) {
        this.name = X509Name.getInstance(seq.getObjectAt(0));
        this.certSerialNumber = (DERInteger) seq.getObjectAt(1);
    }

    public IssuerAndSerialNumber(X509Name name, BigInteger certSerialNumber) {
        this.name = name;
        this.certSerialNumber = new DERInteger(certSerialNumber);
    }

    public IssuerAndSerialNumber(X509Name name, DERInteger certSerialNumber) {
        this.name = name;
        this.certSerialNumber = certSerialNumber;
    }

    public X509Name getName() {
        return name;
    }

    public DERInteger getCertificateSerialNumber() {
        return certSerialNumber;
    }

    public DERObject getDERObject() {
        ASN1EncodableVector v = new ASN1EncodableVector();

        v.add(name);
        v.add(certSerialNumber);

        return new DERSequence(v);
    }
}
